Modern Programming in Java

Abstract

Modern Programming in Java is a comprehensive guide to mastering the principles, tools, and techniques of contemporary software development using the Java programming language. Aimed at developers who seek to build scalable, efficient, and maintainable applications, this book combines foundational Java concepts with modern best practices and cutting-edge features introduced in recent Java releases (Java 11–21). It covers object-oriented and functional programming paradigms, multithreading and reactive programming, design patterns, clean code practices, and enterprise application development with popular frameworks such as Spring Boot. Readers will also gain hands-on experience with modern build tools, testing strategies, containerization, and cloud deployment. With a balanced focus on theory and practical implementation, this book prepares readers to confidently design and develop high-quality Java applications in today’s fast-paced software development environments.

About Book: In today’s rapidly evolving software landscape, Java continues to stand as one of the most powerful, flexible, and enduring programming languages. Modern Programming in Java bridges the gap between traditional object-oriented design and contemporary software development practices, equipping developers with the tools and mindset needed to build efficient, modern, and robust Java applications.

This book is designed for both intermediate developers aiming to modernize their Java skills and seasoned programmers looking to deepen their understanding of modern software engineering paradigms within the Java ecosystem.

Who This Book Is For:

Software developers transitioning to modern Java practices.

Engineers working with legacy Java codebases who want to modernize their approach.

Computer science students and professionals preparing for industry roles.

Anyone interested in writing efficient, readable, and maintainable Java applications in the context of today’s development standards.

Author’s Note:

This book is not just about learning Java syntax—it’s about thinking in Java the modern way. Whether you're building desktop software, APIs, or distributed systems, the techniques and patterns in this book will help you craft high-quality applications that stand the test of time.

INDEX

About University

Shri Davara University, Naya Raipur (C.G.)

Shri Davara University, Naya Raipur (C.G.) has emerged as a centre of excellence of higher education in Central India. Strategically located in the Smart City of New Raipur, this University has started carving a niche for itself in the education domain and is rising as a shining star on the horizon of quality education. Shri Davara University is a life-altering experience where emphasis is placed on students’ overall growth. Students get the chance to display their skill and study under the direction of professionals through NCC, NSS, and several other groups and organisations.

INDEX

Chapter-1

❖  Introduction of java

❖  History and evolution of java

❖  Java ecosystem

❖  Installing and Environment Setup of Java

❖  Object-Oriented Programming (OOP) Concepts in Java

❖  Structure of a Java Program

❖  Comment Lines in Java

Chapter-2

❖  Library Files in Java

❖  Variables and data types

❖  Operators

❖  Looping statements

❖  Jumping statements

❖  Branching statements

Chpter:3

❖  String Buffer in java

❖  Vectors in java

❖  Interface in java

❖  Memory management in java

❖  Arrays in java

❖  Constructor

❖  Deconstruct

❖  Interface

Chapter 4:

❖  Inheritance in java

❖  Error handling in java

❖  File handling in java

❖  Multithreading in java

❖  Applets in java

❖  Database connection in java

Chapter-1

Introduction to Java

Java is a high-level, object-oriented programming language developed by Sun Microsystems in 1995 (now owned by Oracle Corporation). It is one of the most widely used programming languages in the world, known for its simplicity, portability, and versatility.

Java follows the write once, run anywhere principle, which means that code written in Java can run on any device equipped with the Java Virtual Machine (JVM), regardless of the underlying hardware or operating system.

Some of Java's key features include:

Object-Oriented: Promotes modular and reusable code.

Platform-Independent: Java programs run on the JVM, making them portable across platforms.

Robust and Secure: Includes strong memory management and built-in security features.

Multithreaded: Supports concurrent execution of multiple threads.

Rich API and large ecosystem: Java has extensive libraries and frameworks for various domains like web, mobile, desktop, and enterprise applications.

Java is widely used in industries for developing web applications, Android apps, backend systems, and large-scale enterprise software. Its reliability and strong community support make it a preferred choice for developers and organizations worldwide.

History and Evolution of Java

Java was developed in the early 1990s by a team of engineers at Sun Microsystems, led by James Gosling. The project was initially called Green Project and aimed to create a language for embedded systems and smart appliances.

1. Early Development (1991–1994)